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S A M P L E
Number of questions and mark allocations
may vary from the information indicated.
CHEMISTRYWritten examination
Tuesday 11 November 2014 Reading time: 9.00 am to 9.15 am (15 minutes) Writing time: 9.15 am to 11.45 am (2 hours 30 minutes)
QUESTION AND ANSWER BOOK
Structure of bookSection Number of
questionsNumber of questions
to be answeredNumber of
marks
A 30 30 30B 12 12 90
Total 120
• Students are permitted to bring into the examination room: pens, pencils, highlighters, erasers, sharpeners, rulers and one scientifi c calculator.
• Students are NOT permitted to bring into the examination room: blank sheets of paper and/or white out liquid/tape.
Materials supplied• Question and answer book of 45 pages.• A data book.• Answer sheet for multiple-choice questions.Instructions• Write your student number in the space provided above on this page.• Check that your name and student number as printed on your answer sheet for multiple-choice
questions are correct, and sign your name in the space provided to verify this.
• All written responses must be in English.At the end of the examination• Place the answer sheet for multiple-choice questions inside the front cover of this book.• You may keep the data book.
Students are NOT permitted to bring mobile phones and/or any other unauthorised electronic devices into the examination room.
SUPERVISOR TO ATTACH PROCESSING LABEL HEREVictorian Certifi cate of Education2014
STUDENT NUMBER
Letter
2014 CHEMISTRY EXAM
S A M P L E
Number of questions and mark allocations
may vary from the information indicated.
SECTION A – Multiple-choice questions
Instructions for Section AAnswer all questions in pencil on the answer sheet provided for multiple-choice questions.Choose the response that is correct or that best answers the question.A correct answer scores 1, an incorrect answer scores 0. Marks will not be deducted for incorrect answers. No marks will be given if more than one answer is completed for any question.
SECTION B
Instructions for Section BAnswer all questions in the spaces provided. Write using black or blue pen.To obtain full marks for your responses, you should:• give simplifi ed answers, with an appropriate number of signifi cant fi gures, to all numerical questions;
unsimplifi ed answers will not be given full marks• show all working in your answers to numerical questions; no marks will be given for an incorrect answer
unless it is accompanied by details of the working• make sure chemical equations are balanced and that the formulas for individual substances include an
10. Structural formulas of some important biomolecules
OH
OH
OH
OHHO
O O
O
HH
H
HH
H
H H
CH2OH
CH2OH
HOCH2
sucrose
C
C
C
H
H
OH
OH
OH
H
H
H
glycerol
OH
HO
O
H H H H
H
HOCH2
deoxyribose
adenine guanine cytosine thymine phosphate
NH2 NH2
CC
CCH
CH
C
CCHC
HN HN
H2N
N N
N
C C
CO
C N N
O
C
C
O
ONH
CHCH3CH
CHNH
NHN
HN
O
O
P OO
11 2014CHEMDATABOOK
END OF DATA BOOK
11. Acid-base indicators
Name pH range Colour change KaAcid Base
thymolblue 1.2–2.8 red yellow 2×10–2
methylorange 3.1–4.4 red yellow 2×10–4
bromophenolblue 3.0–4.6 yellow blue 6×10–5
methylred 4.2–6.3 red yellow 8×10–6
bromothymolblue 6.0–7.6 yellow blue 1×10–7
phenolred 6.8–8.4 yellow red 1×10–8
phenolphthalein 8.3–10.0 colourless red 5×10–10
12. Acidity constants, Ka, of some weak acids at 25 °C
Name Formula Ka
ammoniumion NH4+ 5.6×10–10
benzoic C6H5COOH 6.4×10–5
boric H3BO3 5.8×10–10
ethanoic CH3COOH 1.7×10–5
hydrocyanic HCN 6.3×10–10
hydrofluoric HF 7.6×10–4
hypobromous HOBr 2.4×10–9
hypochlorous HOCl 2.9×10–8
lactic HC3H5O3 1.4×10–4
methanoic HCOOH 1.8×10–4
nitrous HNO2 7.2×10–4
propanoic C2H5COOH 1.3×10–5
13. Values of molar enthalpy of combustion of some common fuels at 298 K and 101.3 kPa
Substance Formula State ΔHc (kJ mol–1)hydrogen H2 g –286carbon(graphite) C s –394methane CH4 g –889ethane C2H6 g –1557propane C3H8 g –2217butane C4H10 g –2874pentane C5H12 1 –3509hexane C6H14 1 –4158octane C8H18 1 –5464ethene C2H4 g –1409methanol CH3OH 1 –725ethanol C2H5OH 1 –13641-propanol CH3CH2CH2OH 1 –20162-propanol CH3CHOHCH3 1 –2003glucose C6H12O6 s –2816
Shade the “ABSENT” boxif the student was absentfrom the examination.
ABSENT
SUPERVISORUSE ONLY
SUPERVISOR’SINITIALS
USE PENCIL ONLY
VCE CHEMISTRYWritten Examination
INSTRUCTIONS:
SIGNATURE:
SIGN HERE IF YOUR NAME AND NUMBER ARE PRINTED CORRECTLY.
USE PENCIL ONLY
If your name or number on this sheet is incorrect, notify the Supervisor.Use a PENCIL for ALL entries. For each question, shade the box which indicates your answer. All answers must be completed like THIS example:Marks will NOT be deducted for incorrect answers.NO MARK will be given if more than ONE answer is completed for any question.If you make a mistake, ERASE the incorrect answer – DO NOT cross it out.